Paul T. Rong wrote:
But, the related records are more than two thousand, it will be very
hard to delete all of them.
And for some reason, I would like to keep all old records, is it
THEORETICALLY
possible, I mean, to delete the unwanted records in PRODUCTS table
but at the same time to leave the old related records in other tables
unchanged?
Thing is, if you have established a relationship between the two then you
are always going to have this problem. Should there be a one-2-many
relationship between them in the first place?
Last, who can help to explain more simply on "cascade deletes", I
don't think I
understand that term. Many thanks in advance.
From Access 2000 help;
"If you select the Cascade Delete Related Records check box when defining a
relationship, any time you delete records in the primary table, Microsoft
Access automatically deletes related records in the related table. For
example, If you delete a customer record from the Customers table, all the
customer's orders are automatically deleted from the Orders table (this
includes records in the Order Details table related to the Orders records).
When you delete records from a form or datasheet with the Cascade Delete
Related Records check box selected, Microsoft Access warns you that related
records may also be deleted. However, when you delete records using a delete
query, Microsoft Access automatically deletes the records in related tables
without displaying a warning."
To change this go into Tools, Relationships and double-click on the line
connecting your tables.
I reckon Enforce Referential Integrity is checked.
If you uncheck that then you can do what you want but it's going to leave
your tables in a messy state - there will be references in one table to
records that no longer exist.
I think you can sidestep this by following Anne's advice.
